Princess Peach (ピーチ姫, Princess Peach), also known as Princess Toadstool, or just Peach, is a character from the Mario universe, and is usually seen as Mario's damsel in distress. She has been known as "Princess Peach" since Yoshi's Safari; prior to that, she was known as "Princess Toadstool" outside of Japan.
Princess Peach has been a mainstream Mario character since her first appearance in Super Mario Bros., in which Mario had to rescue her from the clutches of the evil Bowser. She usually takes on the role of the damsel-in-distress, though she has been known to help out Mario on several occasions. For example, in Super Princess Peach, it's her turn to save Mario, Luigi and Toad from Bowser. Her first playable appearance, however, was in Super Mario Bros. 2, where she had to help save the dream land called Subcon along with Mario, Luigi and Toad. Aside from her role in the games, Peach has appeared in the Mario spin-offs, such as the Mario Kart, Mario Party, and Mario sports games.
In Super Smash Bros.
While Peach is briefly mentioned in Mario's biography, and one of the stages is Peach's Castle, she physically does not appear in the game in any capacity. A popular rumor though claims she was planned to be playable in the game along with Bowser, King Dedede, Mewtwo, and many other characters, before being cut for space/time constraints. However, unlike the aforementioned three characters, no definitive official source has ever been found that proves Peach was ever planned to be included as a playable character.
In Super Smash Bros. Melee
Peach appears as one of the fifteen default characters available in Melee. She is based on her early appearance from the Nintendo 64 era. Peach is considered by professional players to be amongst the best characters in the game, and so is sixth place in the current Tier list.
Peach returns as a veteran to Brawl, with a design based on her recent appearance elsewhere. Her moves have been virtually unchanged from Melee, with a few minor enhancements and nerfs. Her Final Smash attack, Peach Blossom, involves her lulling all grounded opponents to sleep and deals damage as well.
Additionally, Peach appears as multiple trophies in the game:
In Super Smash Bros. 4
Peach was confirmed to be playable in Super Smash Bros. 4 on September 12, 2013. She is the third female character to be announced for the game after Samus and Wii Fit Trainer. Her facial structure appears more similar to her home series than past Smash Bros. appearances and her dress has been made more stylized and less detailed. Her hair is also lighter and more brightly-shaded. She now has new attack effects, such as a ribbon swirling around her during her up smash. Her design is based on her appearance from recent Mario games such as Super Mario 3D World and Mario Kart 8.
Peach (Tennis Outfit)